4400 Higher June 2008 Paper 3 Q5

EdexcelHigherOld spec3 marksSets

5 \(\mathscr{E} =\) {odd numbers}
\(A =\) {1, 5, 9, 13, 17}
\(B =\) {1, 9, 17, 25, 33}
\(C =\) {7, 11, 15}

(a) List the members of the set

(i) \(A \cap B\),

(ii) \(A \cup B\).

(2)

(b) Explain why \(A \cap C = \varnothing\) (1)

Mark scheme (b)

Scheme	Marks
eg No members in common. The intersection is empty. None of the members of \(A\) & \(C\) are the same. They don’t have the same numbers. No numbers are in both \(A\) and \(C\).	B1
	(1)
	(3 marks)